Lepidus' armor looks like the original Brute Captain's armor, cut from Halo 3. This is likely due to the fact that the first issue of Halo: Uprising was released before Halo 3.

Lepidus was also the name of a Roman politician and General who, along with Octavian (later known as Emperor Augustus) and Marcus Antonious (Marc Antony) formed the Second Triumvirate, which governed the Roman Republic from 43-33 BCE